Planetary nebula · Gemini
NGC 2392 Eskimo Nebula
Also known as: C39
mag 9.654″ across
About
NGC 2392, the Eskimo Nebula, is a planetary nebula of magnitude 9.6 in Gemini, about 54″ across.
How to find it
- NGC 2392 is in the constellation Gemini.
- Best evenings: around late February it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
- Where on Earth: it is seen well, at least 10° up, from north of 59° S.
When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.
What you will see
- EyesNot visible to the naked eye.
- Binoculars (10×50)Too faint for binoculars.
- Telescope (6–8 inch)A small disc or ring of grey-green light; an OIII or UHC filter helps.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 2392, C39, PN G197.8+17.3 |
|---|---|
| Type | Planetary nebula |
| Magnitude | 9.6The smaller the number, the brighter. |
| Apparent size | 54″the full Moon is 31′ across |
| Surface brightness | ≈ 18.0 mag/arcsec²Estimate from the magnitude and size, per square arcsecond. |
| Constellation | Gemini |
| Right ascension (J2000) | 07h 29m 10.8s |
| Declination (J2000) | +20° 54′ 42″ |
More in Gemini
Sources and credits
Catalog data: OpenNGC by Mattia Verga, CC BY-SA 4.0, and d3-celestial by Olaf Frohn, BSD 3-Clause. All data sources →